Baseline characteristics of the study population with chronic obstructive pulmonary disease with regard to the in-hospital outcome.

<p>Data are presented as mean ± standard deviation or number (%).</p><p>ACEI, angiotensin converting enzyme inhibitor; ARB, angiotensin II receptor blocker; COPD, chronic obstructive pulmonary disease; ICS, inhaled corticosteroid; LABA, long-acting β₂ agonist; SABA, short-acting β₂ agonist.</p><p>Baseline characteristics of the study population with chronic obstructive pulmonary disease with regard to the in-hospital outcome.